Omega Speedmaster Racing Master Chronometer 329.23.44.51.06.001: a 44.25 mm stainless-steel chronograph with an 18K Sedna-gold and grey tachymeter bezel, matte grey dial, grey alligator strap, calibre 9900, 60-hour power reserve, and 50 m water resistance; introduced in 2017 and observed through…
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